Automatic driving-box wedge.



F. w. MARTIN. AUTOMATIC DRIVING BOX VWEDGE. APPLICATION H'LED SEPT. 1.19H.

Patented June 4, 1918.V

INVENToR -Fpa 1 il: "m

` fie operate with the 9, Which is forced upward Specification ofEetteis Ietent. Y

Patented deine fi, n

fqlgslication nies September 1, 191k'. nerim tifo. itli.

To all whom t 'may concret/1t:

Be it known theti, FREDERICK W. iden- TiN, of the borough of Queens,`county oi Queens, inthe city end State of' New York, have invented acertain new provenient in Automatic Driving,l Bon f/Vedges, of whichimprovementjthe followy `freedom ci sliding movement to allow for theusual spring action and the vibration oi? the exlebox` in the frame,Without any binding or sticliingo the wedges.

in the accompanying drawing, Figuie l is a side elevation with one halfof the driv ing box and my improved Wedgedeviee indicated in verticalsection Fig. 2 is a horizontal section taken on the line 2-2 ot Fig. l;and Fig.- 3 is a Sinflsi' horizontal section showing a modification.

. According to the construction shown, the

driving boit 6,.liaving Hanges-Z end 8, is mounted between the pedestaliews Lhond 5, the iace'of the jaw et, being inclined to coiece of theadjusting Wedge by the action oi the spring i2. The other tace of theWedge 9 is vertical; Y l

The face of slightly in the oi' the pedestal Li and is engaged by thecorrespondingly inclined face oi the yWedge 13, the opposite face ,ofwhich is vertical. Wedge i3 is provided with lugs 'i8 and 19 at top andbottom, slight clearance wit-li the top and bottoni of the driving'box.Between the vertical faces ci the wedges -9 and 13 is located the pai'-tte driving box is inclined allel'sided floating plate v10o such iengthas to have a slight clearance between the y ira-me 1'? at the top, andthe binder .i6 et the bottoni.

The adjusting Wedge 9 may be guided either by separate strips il boltedto the pedestal jaw, as shown in 2, or by integral ienges' il*i iormedonthe Wedge, es

indicated in' Fig.. 3. The action of the spring ibfpresses the anduseful linie,

direction opposite to the fecev respectively, having a Aance between thefreine at wedge 9 upward taking np eil wenn of the parts and keeping thedrivin the pedestal but at the same be no tendency,r -ifoi' the partsteriere with the 'free spring action or Inovement between drivingl box`and freine When there is en upward movement oi'ihe time thei'e willdriving box relative to the freine it has a tendency to loosen the Wedge13, until it comes in contact with the stopiug 18, after which Wedge 13,Will move with, the box siiding upon the ioating plete 10. yW'ben thereis a downward movement of the box rele tive to the iframe it will carryWedge 13 and fion-ting plate 10 with it to the extent of the clearancebetween the lower end of the plete end the binder. This movement willalso be transmitted to Wedge 9, tending to pull it to stick and in-vdown slightly oi' suiiiciently to relieve the Same and prevent sticking.These two movements keep the wedge device free and pre vent any tendencyto stick or' bind.

Having' now described my invention what l claim as new. end desire tosecure by Letters Patent, is I 1. The combination with a pedestai javi'C,

having en inclined -face, ci a drivingF boit having a' face inclined inthe opposite iieeM tion, wedges engaging 'said inclined feces, and afloating plate between said wedges.

2. The combination with e pedestal iavv having an inclined face, of adriving box having a face inciined vin the opposite direction, n springactuated adjusting Wedge en- .gaging the pedestal jaw, and a Wedgehaving;

stop lugs with clearance 'for engaging; the

drivingl box. v

3. The combination with e pedestei jztvv having ,an inclined ieee, of adiiving bei; having a face inclined in the opposite direc tion, Wedgeseach having one inclined end one vertical ieee, and e vertical sideddoet ng plate located between said Wedges.

4i. The veoinbinetii with pedestei jan! having an inclined face, of edriving; bei: having a face inclined in the opposite direc'- tion,wedges engaging said inclined; feces,

and a Heating plate between said wedges.

have a slight cierne the .top and the and of such length as to binder atthe bottom.

in testimony whereof l have hereunto set my hand.

FREDERECK W. lliiiitT'ili.

